diff --git a/requirements_docs.txt b/requirements_docs.txt
index ef9487836c0c..0d1f2a95fa27 100644
--- a/requirements_docs.txt
+++ b/requirements_docs.txt
@@ -1,3 +1,3 @@
-Sphinx==1.6.3
+Sphinx==1.6.4
 sphinx-autodoc-typehints==1.2.3
 sphinx-autodoc-annotation==1.0.post1